DE102018207998A1 - Hanger clamp for skewed overhead lines - Google Patents

Abstract

A hanger clamp (1) for skewed overhead cables with a contact wire clamp (2) for the current-conducting connection of a contact wire (3) and a hanger cable connection fitting (4) for connecting a hanger rope, connected to a hanger rope connection profile (6), it is a hängerklemme ( 1) are provided for skewed overhead lines that meets the above requirements. This is achieved in that the hanger rope connection profile (6) is rigid and surrounds a light space (7) above the contact wire clamp (2).

Description

The invention relates to a hanger clamp for crooked overhead lines with a contact wire clamp for the current-conducting connection of a contact wire and a hanger cable connection fitting for connecting a hanger rope, connected to a Hängerseilanschlussprofil.

When designing catenary systems for rail-bound (e.g., rail applications), and particularly non-rail systems (e.g., e-highway), it has heretofore been believed that the pantograph contacts the catenary from its underside with an abrasive strip. This is described by a permissible lateral position of the contact wire on the contact strip, which has hitherto been structurally ensured. However, in particular in the case of systems which are not rail-bound, the situation may arise due to lateral relative movement of the vehicles or the overhead line that the contact wire leaves the intended contact area on the contact strip and moves into the lateral boundary area. There, the contact wire is no longer ground exclusively from below, but due to the inclination of the lateral pantograph area (or from the runner horn) from the side. For this reason, light spaces above the contact wire are determined for corresponding systems, which are to be designed free from catenary components. The light space is described starting from the lower edge of the contact wire by an angle of attack α with respect to the horizontal and a clearance height H.

Via the clamping groove of the contact wire, a plurality of terminals with various functions (side and height position of the contact wire, feeds, etc.) are mounted on the contact wire, wherein the terminals are wider than the contact wire at its thickest point. Due to this projection, a collision between the lateral portion of the pantograph and the terminals on the catenary may occur when the inclination to the horizontal of the lateral portion of the pantograph is greater than the potential inclination between the tangent to the catenary outer edge and the portion projecting beyond the contact wire the clamp. In addition, in previous solutions, the components attached to the terminals (side holder, hanger rope, etc.) may violate the light space.

Hangers are used in the overhead contact line to ensure the contact wire height position (z-axis, coordinate system for all following axis designations) as well as in skew overhead lines to ensure sideways position (y-axis). In overhead lines with a skew arrangement, the carrying rope and the contact wire do not run vertically one above the other, d. H. not in the same x-z plane. Hangers divert the weight force (z-axis) and side pull force (y-axis) of the contact wire into the suspension rope via contact points on the contact wire and suspension rope and a suspension rope in between. With skewed overhead lines, a resulting force vector results in the y-z plane. Consequently, the anchor points of the hangers are also not perpendicular in the same x-z plane, but can assume an inclination of up to 20 ° to the horizontal plane (x-y plane). In conventional hangers, the non-rigid hanger rope runs according to the vector of the resulting hanger force almost as a straight line between the two Anklemmpunkten and thus violated from a certain inclination to be kept free space of light. This happens when the slope β of the hanger rope to the horizontal is smaller than the inclination of the angle α, which limits the light space of the pantograph left and right of the contact wire.

In addition, a twisting moment in the lateral direction of withdrawal is introduced into the contact wire by the direction of force action and the height of the point at the terminal. The twisting moment is calculated from the proportion of lateral tension F _Y times the distance between the force application point and the contact wire axis D: M = F _Y * D. Due to the moment, the clamp located on the contact wire is rotated about the x-axis and thus protrudes even further into the light space due to its shape. By the rotation of the contact wire and adjacent terminals are mittwreht and then also hurt the clearance. To avoid this, so far special clamps for hangers have been used for skew overhead lines. This will be a trigger guard in the direction of the resulting hanging force F _RES aligned and the force is introduced almost at the foot of the clamp in the contact wire ( D minimal), so that the twisting moment of the contact wire due to the much smaller D also significantly reduced and the rotation is minimized. However, the clamp used so far can only be adjusted in two discrete stages, 30 ° and 60 °, so that the exact angle can only be approximated and a rotation thereby continues, albeit less, is possible.

In this solution, however, the pulling force continues to pass directly between tie points on the contact wire and carrying rope according to the resultant, so that the clearance is violated when the inclination of the trailer is too shallow.

The above-described situation of the forces to be transmitted applies to the ideal case and assumes that the resultant lies in the yz-plane. This nominal state is produced by the installation personnel plus assembly tolerances when the plant is rebuilt. Due to different temperatures and the wear of the contact wire, the contact wire and the suspension cable may over the course of However, extend plant life differently, so that the trailer is also tilted in the x direction. The load of the trailer is then no longer exclusively in the yz plane, but also in the x-plane. In the previous solution of the hanger clamp for skewed overhead lines of the trigger guard is adjustable only by rotation about the x-axis, but not about the z-axis. It can not align with the z-axis according to the actual direction of traction of the hanger rope. This introduces an additional twisting moment about the z-axis which mechanically loads the clamp and its bracket so that it can be deformed.

Hangers are components that are most common on overhead lines (every three meters). The mounting of the trailer and a readjustment when moving the contact wire and suspension cable in the x-direction are associated with availability-reducing blocking times. In particular, at construction sites for the electrification of highways (eHighway) lock-up breaks are associated with high costs and congestion. Accordingly, a simple and quick installation of all terminals is of great importance. In addition, it must be avoided on motorways that components can fall during assembly on the road, otherwise they can be whirled up by passing vehicles and cause damage to subsequent vehicles.

Trailers must transmit continuous and short-circuit currents in their usual design. The current path must be able to carry these currents safely and must not fail as a result of the current load, in order to prevent the components from falling down or the overhead line from sinking into the roadway area. With the hanger clamps used for skewed overhead lines, a current-proof connection can only be guaranteed by an additional supply terminal for receiving the current loop, which is installed next to the actual hanger clamp.

Thus, the following requirements can be identified for hangers for skewed overhead lines: the clearance at the angle α to the side of the contact wire should be up to a height H be kept clear in order to prevent a collision of the current collector with the trailer for skewed overhead lines (terminal body and connecting cable). A possible rotation of the contact wire about the x-axis should be excluded or kept as low as possible in order to continue to meet the aforementioned requirements for the suspenders for crooked overhead lines and adjacent, other terminals. All operational forces are to be transferred, ie in addition to scheduled forces in the yz direction and forces in the x direction. Continuous and short-circuit currents should be transmitted safely. A quick and easy installation of the fully prefabricated component without disassembly into individual small parts should be possible. During installation, it should be avoided that the assembly personnel can make a wrong adjustment / adjustment.

The previous requirements for hangers for skewed overhead lines were defined without consideration of the free space of light and can therefore not be used for such applications. Due to the adjustable only in two stages deduction of the resultant, the rotation of the contact wire is indeed reduced, but not avoided. Strains in the x-direction have been neglected so far or a bending of the hanger has been accepted. For the transmission of the currents, an additional supply terminal was present, since the actual terminal does not allow connection for a defined current path. The previous hanger clamp for skewed overhead lines was set to one of the two required angles when mounted on site. The correct attitude was subject to the qualification of the staff.

The object of the invention is therefore to provide a hanger clamp for skewed overhead lines that meets the requirements mentioned.

According to the invention, a trailer clamp is provided for wind-skewed overhead lines, in which the trailer cable connection profile is rigid in construction and engages around a clear space located above the contact wire clamp in a state connected to a contact wire. In other words, when the hanger clamp is connected to the trolley wire via the trolley clamp, there is a clearance above the trolley clamp which is to be kept clear. This free space of light is advantageously encompassed by the hanger rope connection profile and thus kept free.

With such a design, the clearance is kept clear because the trailer cable connection profile is angled above the clearance to be kept clear in the clearance, so that it does not connect the Anklemmpunkt the contact wire and the Anklemmpunkt the trailer on straight, direct path, but can embrace its rigid design. This design is the technical implementation of electrification z. B. on highways (eHighway) allows. Compliance with the clearance allows cost reduction for pantographs in eHighways, collisions of rocker elements / horns of the pantograph on elements of the overhead line can be prevented.

The clearance defines therein a space which is provided and fixed in overhead contact systems above the contact wire. This fixed space (the light space) is to be kept free of catenary components (free space of light). The clear space to be kept clear is described starting from a lower edge of the contact wire by an angle of attack relative to the horizontal and a clearance height to be determined in an individual case. The clearance at the angle of attack laterally to the contact wire shall be kept clear up to the clearance height in order to prevent a collision of the pantograph with the trailer clamp for skewed overhead lines (terminal body and connecting cable).

It is preferred that the contact wire clamp is rigidly connected to the Hängerseilanschlussprofil, and the Hängerseilanschlussprofil the light space at an angle of 80 ° to 100 °, in particular 90 °, surrounds. This, in turn, ensures that, on the one hand, the hanger rope connection profile is designed to be completely rigid in order to clear the clearance. On the other hand, the contact wire clamp is rigidly connected to the hanger rope connection profile. The hanger rope connection profile encompasses the light space at an angle between 80 ° and 100 °, preferably 90 °. As a result, the hanger rope connection profile reliably remains outside the light space.

It is preferred that a position of the hanger cable connection fitting in a plane parallel to the contact wire is continuously adjustable along the hanger cable connection profile.

The hanger cable connection fitting is positioned steplessly on the hanger cable connection profile according to the required inclination of the hanger clamp for skewed overhead lines, so that the point of attachment to the contact wire and the connection point of the hanger rope lie on the force action line of the resultant. Thus, the trailer skew calculated from a trailer calculation program can be accurately set and torsion of the contact wire can be completely avoided.

It is preferable that the hanger wire connection profile has a portion which is arranged perpendicular to a longitudinal direction of the contact wire and rotatable about its longitudinal direction. The section of the hanger rope connection profile is z. B. about a threaded bolt about its longitudinal direction (z-axis) rotatably arranged. Thus, forces occurring in the x-direction can lead to a desired orientation of the hanger cable connection profile and not to a torque with a corresponding bending load of the angled profile.

It is preferred that the hanger cable connection fitting be mountable thereon in a first orientation relative to the hanger cable connection profile or a second orientation rotated 180 ° relative to the first cable orientation relative to the hanger cable connection profile. Due to the off-center connection of the hanger rope to the hanger rope connection fitting, a large angular range can be ensured with the shortest possible length of the hanger rope connection profile. The hanger cable connection fitting is mounted on the profile rotated by 180 °. Advantageously, then the hanger rope connection fitting and the hanger rope connection profile is labeled only on one side, which prevents a wrong setting.

It is preferred that the hanger cable connection fitting has a clamping device for the current-conducting connection of a hanger rope to the contact wire.

The hanger rope can be attached directly to the hanger rope connection fitting. A loop of the hanger rope is clamped directly to the hanger cable connection fitting and establishes a current-resistant connection between the hanger rope and the contact wire, without the end of the loop having to be pressed or assembled by special tools. An additional supply terminal can be omitted. Because the hanger rope can be clamped directly into the connection fitting in contrast to the previously used supply terminal and other common solutions with cable lugs, no further work steps for pressing the current-resistant connection are required, and additional components such as lugs and special tools are not needed. The costs are reduced overall.

During project planning, the trailer length and inclination are calculated exactly. Before mounting the hanger clamp for skewed overhead lines, it can be pre-assembled. The required hanger rope is prefabricated according to the required length less the length already bridged by the hanger rope connection profile and hanger rope connection fitting, d. H. pressed with thimbles in an opening of the hanger rope connection fitting. The protruding hanger wire loop for the power connection is inserted into the hanger cable connection fitting. The required hanger angle is adjusted by positioning the hanger cable fitting at the required location in the correct installation direction. By tightening a screw, the hanger cable connection fitting can be fixed and the hauler rope loop clamped in a streamlined manner.

By adding a hanger hanger clamp on the other side of the skewed hanger clamp, a prefabricated hanger clamp is created. At the construction site this only has to set the contact wire and fasten it to the contact wire by tightening the two contact wire clamp screws. The mounting on the suspension cable can also be done without disassembly, depending on the used suspension cable hanger clamp.

Finally, it is also preferred that on a first side and / or an opposite second side of the Hängerseilanschlussprofils a scale for indicating an installation position of the Hängerseilanschlussarmatur is attached. As a result, errors of the assembly staff can be avoided and the total assembly time can be reduced. A reliable setting is ensured.

Preferably, the Hängerseilanschlussarmatur is adapted to secure the hanger rope current. On a far outstanding screw-nut connection and on a cable lug for the current-resistant connection can be advantageously dispensed with in such a design.

Preferably, the Hängerseilanschlussarmatur is connected via a clamping connection with the Hängerseilanschlussprofil. In such an embodiment, the above-described current-resistant connection is realized particularly secure and stable.

• 1 eine Hängerklemme für windschiefe Oberleitungen nach dem Stand der Technik,
• 2 eine erfindungsgemäße Hängerklemme für windschiefe Oberleitungen mit einer Hängerseilanschlussarmatur in zwei unterschiedlichen Positionen, und
• 3 eine erfindungsgemäße Hängerklemme für windschiefe Oberleitungen.

The above-described characteristics, features, and advantages of this invention, as well as the manner in which they will be achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which will be described in detail in conjunction with the drawings. Show it:

• 1 a hanger clamp for skewed overhead lines according to the prior art,
• 2 a hanger clamp according to the invention for skewed overhead lines with a hanger rope connection fitting in two different positions, and
• 3 a hanger clamp according to the invention for skewed overhead lines.

In the 1 is a hanger clamp 1 shown for skewed overhead lines according to the prior art. This has a contact wire clamp 2 on that with the contact wire 3 engaged. Next, the hanger clamp 1 for sloped overhead lines a trailer cable connection fitting 4 on. The trailer cable connection fitting 4 is engaged with a hanger rope 5 and on a trailer cable connection profile 6 attached. It can be clearly seen that the hanger clamp 1 for skewed overhead lines in a light room 7 above the contact wire 3 protrudes. This can lead to the disadvantages of the hanger clamps already described in detail above 1 come for skewed overhead lines according to the prior art.

In 2 is a hanger clamp 1 for skewed overhead lines according to one embodiment of the invention. The same reference numerals designate the same technical features.

The hanger clamp 1 For skewed overhead lines, a right-angled curved and rigid hanger rope connection profile is used 6 on, with a likewise rigid connection to the contact wire clamp 2 and the infinitely adjustable trailer cable connection fitting 4 for connection to the hanger rope 5 (not shown here) to the trailer cable connection profile 6 connected is.

The trailer cable connection fitting 4 will be according to the required inclination of the hanger clamp 1 for skewed overhead lines steplessly on the hanger rope connection profile 6 positioned so that the Anklemmpunkt on the contact wire 3 and the connection point of the hanger rope 5 in the trailer cable connection fitting 4 lie on the force action line of the resultant. Thus, the trailer pitch calculated from a trailer calculation program can be accurately set and the traveling wire rotated 3 completely avoided. The light room 7 is kept free because the trailer cable connection profile 6 above in the light room 7 Angew. be kept free height, so it is the Anklemmpunkt the contact wire 3 and the Anklemmpunkt on the hanger clamp 1 for skewed overhead lines not on a straight, direct path connects, but can embrace by its rigid design.

It can also be seen here that the trailer cable connection fitting 4 off-center with respect to the hanger rope connection profile 6 is arranged. The trailer cable connection fitting 4 is shown in the embodiment shown in two different positions, the relative to each other rotated by 180 ° Hängerseilanschlussarmaturen 4 demonstrate.

The hanger rope 5 can directly on a clamping device 8th the trailer cable connection fitting 4 be attached. A loop of the hanger rope 5 is attached directly to the trailer cable connection fitting 4 trapped and provides a current-resistant connection between hanger rope 5 and contact wire 3 without the end of the loop having to be pressed or assembled by special tools. An additional supply terminal can be omitted.

During project planning, the trailer length and inclination are calculated exactly. Before mounting the trailer clamp 1 For skewed overhead lines this can be pre-assembled. The required hanging rope 5 is according to the required length minus the already by hanger rope connection profile 6 and trailer cable connection fitting 4 bridged length prefabricated, ie with thimbles in the opening of the hanger rope connection fitting 4 pressed. The protruding trailer cable loop for the power connection is inserted into the clamping device 8th the trailer cable connection fitting 4 introduced. The required hanger slope is adjusted by the hanger rope fitting 4 in the required position in the correct installation direction (left or right hanger cable connection fitting shown 4 ) is positioned. In addition to the mounting direction of the hanger cable connection fitting 4 is in particular the correct alignment on a scale 9 required for proper functioning. The scaling 9 will be explained in more detail below. By tightening a screw, the hanger cable connection fitting 4 fixed and the hauler loop firmly clamped streamlined.

By adding a carrying cable clamp (not shown) on the other side of the hanger clamp 1 For skewed overhead lines, a prefabricated trailer clamp is created 1 for skewed overhead lines. At the construction site, this only has to be on the contact wire 3 set and by tightening the two contact wire clamping screws on the contact wire 3 be attached. The mounting on the suspension cable can also be done without disassembly, depending on the used suspension cable hanger clamp.

Finally, the scaling 9 on the trailer cable connection profile 6 arranged. This is for the respective installation position of the hanger rope connection fitting 4 clearly mounted on one side, making assembly easier. By attaching an arrow on one side and scaling 9 the correct installation direction must be clearly and unmistakably assigned. This ensures a reliable adjustment of the hill slope and avoids accidental misadjustments.

In 3 the same features are provided with the same reference numerals and shown. Here is a view shown in the only one Hängerseilanschlussarmatur 4 is shown. The section of the hanger rope connection profile 6 immediately above the contact wire clamp 2 is rotatably supported about its longitudinal extent by means of a threaded bolt. As a result, additionally occurring lateral forces on the hanger clamp 1 avoided for skewed overhead lines.

While the invention has been further illustrated and described in detail by way of preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.

LIST OF REFERENCE NUMBERS

1

dropper clamp

2

Contact wire clamp

3

contact wire

4

Trailer cable connection fitting

5

hanger rope

6

Trailer cable connection profile

7

clearance

8th

clamping device

9

scaling

Claims (9)

Trailer clamp (1) for skewed overhead lines with - A contact wire clamp (2) for the current-conducting connection of a contact wire (3), and - A trailer cable connection fitting (4) for connecting a hanger rope (5), connected to - A trailer cable connection profile (6), wherein - The hanger rope connection profile (6) is designed rigid and - One in a with a contact wire (3) connected state of the hanger clamp (1) above the contact wire clamp (2) located, to be kept clear space (7) surrounds. Hanger clamp (1) for skewed overhead lines Claim 1 , wherein the contact wire clamp (2) is rigidly connected to the Hängerseilanschlussprofil (6), and the Hängerseilanschlussprofil (6) the light space at an angle of 80 ° to 100 °, in particular 90 °, surrounds. Hanger clamp (1) for skewed overhead lines Claim 1 or 2 in which a position of the hanger cable connection fitting (4) in a plane parallel to the contact wire (3) is infinitely adjustable along the hanger rope connection profile (6). Trailer clamp (1) for skewed overhead lines according to one of Claims 1 to 3 wherein the hanger wire connection profile (6) has a portion which is arranged perpendicular to a longitudinal direction of the contact wire (3) and rotatable about its longitudinal direction. Trailer clamp (1) for skewed overhead lines according to one of Claims 1 to 4 wherein the hanger cable connection fitting (4) is mountable thereon in a first orientation relative to the hanger cable connection profile (6) or a second orientation rotated 180 ° relative to the hanger cable connection profile (6) to the first orientation. Trailer clamp (1) for skewed overhead lines according to one of Claims 1 to 5 , wherein the hanger cable connection fitting (4) has a clamping device (8) for the electrically conductive connection of the hanger rope (5) to the contact wire (3). Trailer clamp (1) for skewed overhead lines according to one of Claims 1 to 6 , wherein on a first side and / or an opposite second side of the Hängerseilanschlussprofils (6) a scale (9) for indicating an installation position of the Hängerseilanschlussarmatur (4) is mounted. Trailer hitch (1) for skewed overhead lines according to one of the preceding claims, wherein the hanger cable connection fitting (4) is adapted to secure the hanger rope (5) fixed current. Hanger clamp (1) for skewed overhead lines Claim 8 , wherein the hanger cable connection fitting (4) via a clamping connection with the Hängerseilanschlussprofil (6) is connected.

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